Flow control valve for ventilation and exhaust pipeline

Abstract

The utility model relates to the technical field of flow control valves, and discloses an exhaust pipeline flow control valve which comprises a valve body, an air inlet pipe is fixedly installed in one side of a water inlet of the valve body, an air outlet pipe is fixedly installed in one side of a water outlet of the valve body, and connecting flanges are fixedly installed at the end of the air inlet pipe and the end of the air outlet pipe. Mounting grooves are formed in the outer sides, close to the connecting flange, of the air inlet pipe and the air outlet pipe, and filtering parts are arranged in the mounting grooves; the mounting plate is inserted into the positioning hole, the lower half part of the filter screen frame is embedded into the embedding groove, and the sealing strip is clamped into the sealing groove, so that not only can the mounting positioning function be achieved, but also the sealing function can be achieved, air leakage at the joint is avoided, at the moment, the filter screen frame can be used for filtering introduced air, and then the pull plate is pulled to rotate, so that air leakage is avoided. And the pulling plate can be conveniently held to lift the mounting plate to the flower scattering unit, so that the filter screen frame can be conveniently cleaned or replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of flow control valves, in particular to a flow control valve for ventilation and exhaust pipes. Background Art

[0002] The ventilation duct is an important part of the ventilation system, which is used to transport air to a specific location or exhaust air from a certain location. The flow control valve is a multifunctional valve that uses a high-precision pilot method to control the flow. In order to control the ventilation and exhaust flow, a flow control valve is generally installed in the pipeline.

[0003] When ventilation and exhaust are carried out in the pipeline, the air will pass through the flow control valve to accurately control the flow rate of ventilation and exhaust. However, since the outside air will be absorbed during the ventilation and exhaust process, some impurities will be brought in, and the larger impurities will not be discharged after passing through the control valve, which will affect the performance of the flow control valve. In the long run, more and more impurities will accumulate, seriously affecting the normal use of the flow control valve. Therefore, further improvements can be made. Utility Model Content

[0004] To solve the above-mentioned problems, the utility model provides the following technical solutions: a flow control valve for air ducts and exhaust pipes, comprising a valve body, wherein a water inlet and a water outlet are respectively arranged on both sides of the valve body, a valve stem is arranged in the top of the valve body, an air inlet pipe is fixedly installed in the water inlet side of the valve body, an air outlet pipe is fixedly installed in the water outlet side of the valve body, connecting flanges are fixedly installed at the ends of the air inlet pipe and the air outlet pipe, installation grooves are provided on the outer sides of the air inlet pipe and the air outlet pipe near the connecting flanges, and a filter component is arranged inside the installation groove.

[0005] As an optimization, the mounting groove is semicircular and can accommodate the integral embedding of the filter component. The inner wall of the air inlet duct is provided with an embedding groove in the middle of the extension of the end of the mounting groove. Sealing grooves are provided on the inner walls on both sides of the mounting groove, and two symmetrical positioning holes are provided on the bottom walls on both sides of the mounting groove.

[0006] As an optimization, the filter component includes a mounting plate embedded in the mounting groove, a filter screen frame is fixedly installed on the inner wall of the mounting plate, and the lower half of the filter screen frame is embedded in the embedding groove, and sealing strips are fixedly installed on the corresponding sealing grooves on both sides of the mounting plate. The sealing strips are made of rubber material and are correspondingly inserted into the two sealing grooves. By inserting the two sealing strips into the sealing grooves, a sealing effect can be achieved to avoid air leakage at the connection.

[0007] As an optimization, empty grooves are symmetrically opened on the outside of the mounting plate, and a pull plate is hinged inside the empty groove. A buckle groove is opened at the end of the pull plate for convenient flipping of the pull plate by fingers. By flipping the pull plates on both sides, it is convenient to hold the pull plate to pull out the filter frame, thereby facilitating cleaning or replacement of the filter frame.

[0008] As an optimization, positioning components are provided at the bottom of both ends of the mounting plate corresponding to the positioning holes, and the positioning components include a fixed cylinder fixedly installed at the bottom end of the mounting plate, a sliding rod is slidably inserted inside the fixed cylinder, and the sliding rod is rotatably connected to a rotating plate on the outside of the fixed cylinder, and the rotating plate is rotatably connected to the positioning plate at one end away from the sliding rod, and a top column is fixedly installed on the bottom wall of the positioning hole and directly below the sliding rod.

[0009] As an optimization, the fixed tube is slidably inserted in the positioning hole, and the outer array of the fixed tube is provided with four groups of sliding grooves that penetrate into the interior of the fixed tube. The positioning plate is slidably connected in the sliding groove. When the mounting plate is installed downward, the fixed tube will be inserted into the positioning hole, and then the sliding rod will contact the top column downward, so the positioning plate will be driven by the rotating plate to slide outward along the inner wall of the sliding groove, and then it will hit the inner wall of the positioning hole, thereby improving the stability after installation.

[0010] As an optimization, a baffle is fixedly installed on the outside of the sliding rod, and a compression spring is fixedly installed between the baffle and the top wall of the fixed tube. The compression spring is sleeved on the outside of the sliding rod. The elasticity of the compression spring itself will make the initial position of the positioning plate located in the fixed tube, and at the same time, it can facilitate the sliding rod to reset downward, so that the positioning plate is reset to the initial position.

[0011] The beneficial effects of the utility model are:

[0012] 1. The flow control valve for the ventilation and exhaust ducts inserts the mounting plate into the positioning hole, and at the same time the lower half of the filter frame is embedded in the embedding groove, and the sealing strip is also stuck in the sealing groove. It can not only play the role of installation positioning, but also play a sealing role to avoid air leakage at the connection. At this time, the filter frame can filter the incoming wind, and by turning the pull plate, you can easily hold the pull plate to lift the mounting plate, so as to facilitate the cleaning or replacement of the filter frame.

[0013] 2. When the filter is installed on the flow control valve for the ventilation and exhaust ducts, the fixed cylinder will be inserted downward into the positioning hole, so the slide rod will contact the top column downward, and then the top column will move upward relative to the fixed cylinder, so the rotating plate will be deflected, and then the positioning plate will be driven to slide outward along the inner wall of the slide groove, so it will be squeezed on the inner wall of the positioning hole, thereby improving the stability of the installation and preventing the filter from accidentally falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the installation slot structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the filter component of the utility model;

[0017] Figure 4 It is a schematic cross-sectional view of the positioning component structure of the utility model.

[0018] In the figure: 1. valve body; 2. valve stem; 3. air inlet pipe; 4. air outlet pipe; 5. connecting flange; 6. mounting groove; 7. filter component; 8. embedding groove; 9. sealing groove; 10. positioning hole; 11. mounting plate; 12. filter frame; 13. sealing strip; 14. positioning assembly; 15. empty groove; 16. pull plate; 17. fixing cylinder; 18. sliding rod; 19. rotating plate; 20. positioning plate; 21. top column; 22. baffle; 23. compression spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-2 A flow control valve for an air duct and an exhaust duct comprises a valve body 1, a water inlet and a water outlet are respectively arranged on both sides of the valve body 1, a valve stem 2 is arranged inside the top of the valve body 1, an air inlet pipe 3 is fixedly installed inside the water inlet side of the valve body 1, an air outlet pipe 4 is fixedly installed inside the water outlet side of the valve body 1, and connecting flanges 5 are fixedly installed at the ends of the air inlet pipe 3 and the air outlet pipe 4, and mounting grooves 6 are arranged on the outer sides of the air inlet pipe 3 and the air outlet pipe 4 near the connecting flange 5, and a filter component 7 is arranged inside the mounting groove 6, the mounting groove 6 is opened in a semicircular shape, and the filter component 7 can be embedded as a whole, an embedding groove 8 is opened on the inner wall of the air inlet pipe 3 and in the middle of the extension of the end of the mounting groove 6, sealing grooves 9 are opened on the inner walls on both sides of the mounting groove 6, and two symmetrical positioning holes 10 are opened on the bottom walls on both sides of the mounting groove 6.

[0021] See also Figure 3The filter component 7 includes a mounting plate 11 embedded in the mounting groove 6, a filter frame 12 is fixedly mounted on the inner wall of the mounting plate 11, and the lower half of the filter frame 12 is embedded in the embedding groove 8, and sealing strips 13 are fixedly mounted on the sealing grooves 9 on both sides of the mounting plate 11. The sealing strips 13 are made of rubber and are correspondingly inserted into the two sealing grooves 9. By inserting the two sealing strips 13 into the sealing grooves 9, a sealing effect can be achieved to prevent air leakage at the connection;

[0022] See also Figure 3 The outer side of the mounting plate 11 is symmetrically provided with a slot 15, and a pull plate 16 is hinged inside the slot 15. The mounting plate 11 is provided with a buckle slot at the end of the pull plate 16 for convenient finger-pushing of the pull plate 16 to flip it out. By pulling the pull plates 16 on both sides to flip it out, it is convenient to hold the pull plate 16 to pull out the filter frame 12, so as to facilitate cleaning or replacement of the filter frame 12;

[0023] See also Figure 3-4 The bottom of both ends of the mounting plate 11 are provided with positioning components 14 corresponding to the positioning holes 10. The positioning components 14 include a fixing tube 17 fixedly mounted on the bottom end of the mounting plate 11. The fixing tube 17 is slidably inserted in the positioning hole 10. The outer array of the fixing tube 17 is provided with four groups of sliding grooves that penetrate into the interior of the fixing tube 17. The interior of the fixing tube 17 is slidably inserted with a sliding rod 18. The sliding rod 18 is located in the outer side of the fixing tube 17 and is rotatably connected with a rotating plate 19. The end of the rotating plate 19 away from the sliding rod 18 is rotatably connected with a positioning plate 20. The positioning plate 20 is slidably connected in the sliding groove. The bottom wall of the positioning hole 10 and a top column 21 are fixedly installed directly below the sliding rod 18. When the mounting plate 11 is installed downward, the fixing tube 17 will be inserted into the positioning hole 10, and then the sliding rod 18 will contact the top column 21 downward, so the positioning plate 20 will be driven by the rotating plate 19 to slide outward along the inner wall of the sliding groove, and then it will hit the inner wall of the positioning hole 10, thereby improving the stability after installation;

[0024] See also Figure 3-4 A baffle plate 22 is fixedly installed on the outer side of the slide rod 18, and a compression spring 23 is fixedly installed between the baffle plate 22 and the top wall of the fixed tube 17. The compression spring 23 is sleeved on the outer side of the slide rod 18. The elasticity of the compression spring 23 itself will make the initial position of the positioning plate 20 located in the fixed tube 17, and at the same time, it can facilitate the slide rod 18 to reset downward, so that the positioning plate 20 is reset to the initial position.

[0025] When in use, first insert the mounting plate 11 into the positioning hole 10, the lower half of the filter frame 12 will be embedded in the embedding groove 8, at this time the sealing strip 13 will be correspondingly inserted into the two sealing grooves 9, and at the same time the fixing cylinder 17 will be inserted downward into the positioning hole 10, and the sliding rod 18 will contact the top column 21 downward, and then move upward relative to the fixing cylinder 17, so the positioning plate 20 will slide outward along the inner wall of the slide groove through the rotating plate 19, and then squeeze the inner wall of the positioning hole 10;

[0026] After that, the control valve can be opened for ventilation, and the filter frames 12 arranged on both sides of the valve body 1 will filter the air entering the valve body 1 to prevent foreign matter from entering the valve body 1.

[0027] After long-term use, by pulling the pull plate 16 and turning it outward, the pull plate 16 will rotate out of the empty slot 15, and then the pull plate 16 can be held with both hands, and then upward force can be applied to lift the mounting plate 11 upward, and the filter frame 12 can be removed, thereby facilitating the cleaning or replacement of the filter frame 12.

[0028] To sum up, the flow control valve for the ventilation and exhaust ducts can play a role in installation and positioning, as well as sealing, by inserting the mounting plate 11 into the positioning hole 10, while the lower half of the filter frame 12 will be embedded in the embedding groove 8, and the sealing strip 13 will also be stuck in the sealing groove 9. At this time, the filter frame 12 can filter the incoming wind, and by turning the pull plate 16, the pull plate 16 can be conveniently held to lift the mounting plate 11, thereby facilitating the cleaning or replacement of the filter frame 12.

[0029] When installing the filter, the fixing cylinder 17 will be inserted downward into the positioning hole 10, so the sliding rod 18 will contact the top column 21 downward, and then the top column 21 will move upward relative to the fixing cylinder 17, so it will drive the rotating plate 19 to deflect, and then drive the positioning plate 20 to slide outward along the inner wall of the slide groove, so it will be squeezed on the inner wall of the positioning hole 10, thereby improving the stability of the installation and preventing the filter from accidentally falling off.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The standard parts used in the utility model can all be purchased from the market, and the special-shaped parts can all be customized according to the description and the drawings.

[0032] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A flow control valve for an air duct, comprising a valve body (1), characterized in that: A water inlet and a water outlet are respectively arranged on both sides of the valve body (1); a valve stem (2) is arranged inside the top of the valve body (1); an air inlet pipe (3) is fixedly installed inside the water inlet side of the valve body (1); an air outlet pipe (4) is fixedly installed inside the water outlet side of the valve body (1); connecting flanges (5) are fixedly installed at the ends of the air inlet pipe (3) and the air outlet pipe (4); installation grooves (6) are provided on the outer sides of the air inlet pipe (3) and the air outlet pipe (4) near the connecting flanges (5); and a filter component (7) is arranged inside the installation groove (6).

2. The ventilation and exhaust duct flow control valve according to claim 1, characterized in that: The installation groove (6) is semicircular and can accommodate the filter component (7) to be embedded as a whole. The inner wall of the air inlet pipe (3) is provided with an embedding groove (8) in the middle of the extension of the end of the installation groove (6). The inner walls on both sides of the installation groove (6) are provided with sealing grooves (9). The bottom walls on both sides of the installation groove (6) are provided with two symmetrical positioning holes (10).

3. The ventilation and exhaust duct flow control valve according to claim 2, characterized in that: The filter component (7) comprises a mounting plate (11) embedded in the mounting groove (6); a filter screen frame (12) is fixedly mounted on the inner wall of the mounting plate (11); and the lower half of the filter screen frame (12) is embedded in the embedding groove (8); sealing strips (13) are fixedly mounted on the two sides of the mounting plate (11) corresponding to the sealing grooves (9); the sealing strips (13) are made of rubber and are correspondingly inserted into the two sealing grooves (9).

4. The ventilation and exhaust duct flow control valve according to claim 3, characterized in that: The outer side of the installation plate (11) is symmetrically provided with hollow grooves (15), the interior of the hollow groove (15) is hinged with a pull plate (16), and the installation plate (11) is provided with a buckle groove at the end of the pull plate (16) for conveniently flipping the pull plate (16) by pressing a finger.

5. The ventilation and exhaust duct flow control valve according to claim 3, characterized in that: The bottom of both ends of the mounting plate (11) are provided with positioning components (14) corresponding to the positioning holes (10), and the positioning component (14) includes a fixing tube (17) fixedly mounted on the bottom end of the mounting plate (11), and a sliding rod (18) is slidably inserted inside the fixing tube (17), and the sliding rod (18) is rotatably connected to a rotating plate (19) on the outer side of the fixing tube (17), and the rotating plate (19) is rotatably connected to a positioning plate (20) at one end away from the sliding rod (18), and a top column (21) is fixedly mounted on the bottom wall of the positioning hole (10) and directly below the sliding rod (18).

6. The ventilation and exhaust duct flow control valve according to claim 5, characterized in that: The fixed cylinder (17) is slidably inserted into the positioning hole (10), and the outer side of the fixed cylinder (17) is provided with four groups of sliding grooves penetrating into the interior of the fixed cylinder (17), and the positioning plate (20) is slidably connected in the sliding grooves.

7. The ventilation and exhaust duct flow control valve according to claim 6, characterized in that: A baffle (22) is fixedly installed on the outer side of the slide rod (18), a compression spring (23) is fixedly installed between the baffle (22) and the top wall of the fixed cylinder (17), and the compression spring (23) is sleeved on the outer side of the slide rod (18).

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